Composite dock decking in Coral Gables

Who re-decks

Owners with splintering or soft boards on sound framing, and owners building a new dock who want less upkeep.

DERM approval comes before the City

Coral Gables will not take dock, mooring or wharf plans without Miami-Dade DERM's preliminary approval, and revised plans need DERM's stamp again. The permit set also needs a notarised Public Works application, dimensions across the waterway, existing mangroves and the installation method, so a lift or dock design gets settled with the county first.

A deck-only replacement on the same frame is usually the simplest permit here.[1]

Mangroves on the plans

Coral Gables dock and wall plans must show existing mangroves, and any trimming falls under Miami-Dade's Class I permit for coastal construction and mangrove trimming. DERM's mangrove permits run 3 years, against 2 years for a short-form structure permit, so a job that touches mangroves is scheduled differently.[1][2]

Cocoplum's own dock plan

Properties in Cocoplum Section II must include a copy of the Cocoplum dock plan with their permit, and every Gables dock submittal shows the dimensions across the waterway. On the winding Gables canals that cross-section drawing is what proves a dock or lift leaves room for boats to pass.

A redeck is the moment to check that the dock still fits the limit if you add width.[1]

What makes Coral Gables different

Dock, mooring and wharf plans must show dimensions across the waterway, existing mangroves and the installation method, and carry DERM's preliminary approval; revised plans need a DERM stamp again. Properties in Cocoplum Section II must include a copy of the Cocoplum dock plan. The City also asks for a notarised Public Works permit application, colour photos of existing conditions and a survey.[1]

Fee incentives

Under Resolution 2025-342, living seawalls with pH-neutral cement or modular retrofit panels qualify for a 20% reduction in city permit fees, and a separate fee waiver applies to existing homes making seawall improvements to address sea level rise.[4]

Permits in Coral Gables

• Miami-Dade DERM, Coastal Resources Section: Class I permit, plus the preliminary approval the City asks to see before it looks at any dock or wall plans. Phone (305) 372-6575.
• City of Coral Gables Development Services and Public Works: Building and Public Works permits for seawalls, bulkheads and docks, after DERM preliminary approval.
• Florida DEP or South Florida Water Management District: State permit or exemption for docks and walls on the Gables canals and the bay, where aquatic preserve rules apply to open bay frontage.
• US Army Corps of Engineers, Jacksonville District: Federal authorisation for bayfront and canal work, confirmed for each job since SPGP VI's stated July 2026 expiry.

What we check before re-decking

• Joists and stringers for rot
• Fasteners and hardware for corrosion
• Pilings at the waterline
• Board spacing rules for your waterway

Decking and permits

A like-for-like re-deck is DERM-exempt in Miami-Dade, but your city may still need a permit. Making the dock bigger changes the over-water area, which FDEP counts toward the 500 or 1,000 sq ft exemption limits, so it needs a permit review.[2][7]

Frequently asked questions